About: http://webisa.webdatacommons.org/295531225

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	I believe that the latter plays into it mostly since you see this with any extra help that you offer as a professor such as office hours, cell phone, twitter, etc. which goes unused most of the time.
http://www.w3.org/ns/prov#wasQuotedFrom	progarchives.com